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MuchBoost 2.9TFSI Upgraded Turbocharger with a Custom Billet Compressor Wheel 6+6 Blades, and High Flow 9 Blade Turbine Wheel. It is based on an original KKK/BWTS Turbocharger, which means that the installation is 100%P&P. The turbocharger is meant to work with Audi RS4 B9, RS5 F5, and Porsche Panamera II with the 2.9TFSI 440-450HP engines.

The turbo delivers up to 147% power (210 extra HP) over the factory specs. It is a great choice for someone looking for a bit extra HP from their sports cars. MuchBoost turbo allows you to get more from your engine and enjoy it even more than you’ve been so far.

We have developed 2 modification options that allow you to reach anywhere from 650HP to 730HP.

MuchBoost 2.9TFSI 650

Upgraded turbochargers with an estimated ~650HP at the crank. List of modifications:

  • Fast spool thanks to enlarged Billet Compressor,
  • Enlarged High-Flow 9 Blades Turbine Wheel,
  • High air-fuel ratio including high peak torque achieved at low engine speeds,
  • Genuine BWTS compressor housing,
  • Genuine BWTS exhaust manifold,
  • Genuine BWTS bearing housing,
  • Original BWTS actuator,
  • Upgraded Journal bearing system that allows holding more boost,
  • Precisely machined exhaust and compressor housing,
  • The compressor and turbine wheels are balanced separately, and then the whole core is high-speed balanced using VSR balancing machines at speeds similar to the level seen in the vehicle.
MuchBoost 2.9TFSI 730

Upgraded turbochargers with an estimated potential of ~730HP at the crank. Modifications compared to the 650 option are the same except:

  • Enlarged Billet Compressor Wheel,
  • Enlarged Turbine Wheel
Example project:
One of our clients bought the 650HP variant of this turbo and they managed to produce 620HP and 800Nm of torque at the crank.
They had custom ECU and TCU tunes done. Dyno graph below:
Other significant modifications

The turbo is meant to work with ~650HP In order to reach that level of power, you need to adjust your fuel, exhaust, and cooling systems as well.

You might also consider

2.9TFSI Custom De-Cat Downpipe Audi RS4 B9, RS5 5F


A set of gaskets is included with every option you choose!


Audi RS4 2.9TFSI B9 450HP
Audi RS5 2.9TFSI F5 450HP
Audi S6 2.9TFSI C8 450HP
Porsche Panamera 2.9 II 440HP
Porsche Cayenne 2.9 III 440HP

Factory numbers



VW EA839,

OEM number


(If your engine has a different code, please send us a message. We will verify it.)

Matters you should be aware of when placing your order.
    1. The warranty is 12 months without the limit of mileage.
    2. We need about 7 working days to perform and ship the upgraded turbocharger. The parcels in European Union are shipped via DPD for just 25,00 EURO. DHL Express (airplane shipping)  is used for orders besides the EU, it costs 99,00 EURO. The average delivery time is 2-4 working days. 
    3. Every parcel is fully insured.
    4. If you didn`t find the turbo you need, feel free to contact us. We are able to perform many more upgraded turbochargers than you can find on the site. Our development department works permanently on the new models.
    5. Do you have a workshop, are you an influencer or seller of tuning parts? We are open to cooperation by offering discounts and refunds.
    6. During placing your order, please provide information as follows:
    • the engine code,
    • the car model,
    • the stock power,
    • the VIN number

These details are helpful to make the turbo correctly.

* Just upgrade option means that we will modify your turbochargers once you sent them to us. The turbo can’t be cracked and must be genuine.

Complete turbo option is for those who want to buy a fully built turbo ready to install in the car.






650HP, 730HP

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